amdursky and s



S. S. AMDURSKY AND S. RUBENFELD.

MACHINE FOR CUTTING BUTTONHOLE S.

APPLICATION FILED SEPT. 13.1911.

Patented Sept. 16, 1919.

4 $HEETSSHEET 1.

QM Q INVENTORS WITNESS 1 14 ORA/EV S. S. AMDUHSKY AND S. RUBENFELD.MACHINE FOR CUTTING BUTTONHULES- APPLICATION man SEPT. I3. 1911. v v 1fiflfi %jl,% Pafentedfiept. 16,1919;

4 $HEETS--SHEET 3 WITNESS f [NYE/ Mk3 S. S, AIVIDURSKY AND S. RUBENFELD.

MACHINE FOR CUTTING BUTTONHOLES. APPLICATION FlLED'SEPT-13, I917.

1,3 1 6,21 5,. Patented Sept. 16, 1919.

I WITNESS niTED strains PATENT OFFICE.-

SAMUEL S. AMIDURSKY AND SAMUEL BUBENFEID, OF ROCHESTER, YORK.

MACHINE FOR CUTTING BUTTONHOLES.

will be fully illustrated in the drawings,

described in the specification and pointed outin theclaims at'the endthereof.

In the drawings, v Figure 1 is a top plan view of the machine partlybroken away.

1 Fig. 2 is a front elevation ofthe machine partly broken away.

Fig. 3 is a sectional elevation, the section I being taken on the line3"3* of Fig. 2. v.

Fig. 4 is an end elevation of the machine viewed from the left hand endof Figs. 1

and 2. 4 Fig. 5 is an end elevation-of the'machine viewed from therighthand end of Figs. 1 and 2.

Fig. 6 is a rear elevation partly broken away.

Fig. 7 is a detail view of the cutting of the machine block and supporttherefor partly broken away.

Fig. 8 is a sectional View through an ad justing device, thesectionbeing taken on the line 8 -8 of Fig.- 1. Fig. 9 isaverticalsection through one of the cutters, the section being taken'onthe line 9"-9? of Fig. 1.

' Fig. 10 is a sectional view of the rear end support ofthe threadedshaft that controls the spacing of the cutters.

' In the drawings like reference numerals indicate like ,parts.

In the drawings reference numeral 1 in dicates the plate at the righthand end of the machine and reference numeral 2 indicates the plate atthe left hand end of the machine. .On top of these plates and connectingthem isthe cover plate 3. This cover plate is fastened to the end plate2 by screws 4:, 5 and 6 and to'the end plate 1 by the screws 7 8 and 9.

Fastened at the front of the cover-plate 3 by the screws 11, 11 istheplate 10. Formed Specification of Letters Patent.

block 13 in which it is free to rotate.

Patented se t. 1c, 1919.

Application filed September 13, 1917. Serial No. 191,320.

on thebottom of the cover plate is the flange l2 WhICh Wltl'I the plate10 forms a guide or runway for the bearing blocks 13. One ofthesebearing blocks 13 is provided for each set of cutters in themachine. The cutters are adjustable so that the space between thecutters can be varied uniformly at will and the means by which thisresult is secured will now be described as follows:

Mounted in each of the bearing blocks 13 1s a support 1 1 for thecutters 15 and 16. This support is made up of a round stem 17 and ablock 18. The stem 17 makes engagement with the cylindrical opening inthe Extending rearwardly from the stem 17 as shown in Fig. 1 is a shaft19 making threaded engagement with the stem. 17 on the rear end of theshaft 19. is a knurled wheel or handle 20 by which the shaft 19 and thesup port 14 may be turned and held in difierent positions.

For this purpose the shaft 19 is recessed as indicated at 21. Fastenedto the shaft 19 is the stud 23, the frward end of which makes threadedengagement with the recess in the shaft 19. Mounted. on the stud 23 isthe flanged. collar 22., ,the small end of which engages in the slot 24:in the rear side of the cover-plate 3. This slot 24 extends substantiallythe full length of the cover-plate and the shaft 19 and partsattached thereto are free to slide along the slot.

The studs 23 are slotted as indicated at 25. A pin 26 is fastened ineach of the handles .20 and makes a sliding engagement with the slot 25in' the stud 23. The handle 20 is normally pressed to the right intoengage ment with the late 3 as shown in Figa' 8 by means of t ecompression spring 27.,

which spring bears against the handle 20 at the righthand end andagainst the pin 28 fastened in the stud 23 at the other end.

The handle 20 has its forward end recessed. to form 1 shoulderedparallel sidesthereon, which sides normally engage in the slot 24, beingheld in such engagement by the spring 27. The shaft 19 can be turned bymeans of the handles 20 so as to throw the cutters into and out ofoperative position. By withdrawing the handle 20 from theposition shownat the right of Fig. 1 the shaft 19 can be turned 180,after which thehandle can again engage in the slot 2-1 locking the shaft in the newposition. By means of this arrangementthe handle can be held in lockedengagement with the slot in the plate 3 in either of two positions 180apart and the shaft and cutters thereon'will be positioned accordingly.I I 5 On the end of the shaft 19-is the support 14 carrying the cuttersdescribed. Asshown in Figs. 3 and 9 these cutters are normallypositioned withtheir cutting edges turned down facing the cutl0 tingblock 29. This cutting block is mount ed on the brass cutting blocksupport 30 which moves up and down in a curved path with a parallelmovement, it being supported for this purpose by the swinging parallellinks 31 and 32. This support is raised bythe; cranks 33 keyed to theshaft 34, which shaft is rocked by the lever 35 to which is connected alink 36 which in turn may be operated by a treadlev or any othersuitable device.

As the cutting block approaches the knives by a swinging motion and themate- 'rial is interposed between the cutting block and the knives, theknives will give a shearing cut to-the material causing it to be easilycut by the knives By turning the particular ones of the handles 20 oneor more of thecutters can be turned away from the cutting block so thatthose particular knives will not cut the material that is laid on andcarried upward by the cutting block. The cutter is circular and isintended. to cut the eye at the end of the buttonhole. This cut- 30 teris adjustable up and down and for this purpose is mounted on a screw 37which has a round head at the upper end by which it may be turned up anddown in the block 18. The cutter 16 is also adjustable up or down andfor this purpose the screw 38 is provided. To prevent the cutter frommoving up and down with the screw I support the cutter as follows:

.Thescrew 38 is recessed and receives in 45 its recess the end of thestem 39. This stem makes a shouldered engagement with the bottom of thescrew 38 and is provided with a screw 40 which makes a shoulderedengagement with the screw 38 near the top thereof by which the stem 39can be rigidly clamped to the screw 38 By turning the screw 40 the screw38 is released from the stem 39 so that the screw'38 is free to turnthereon and as it turns it is raised. or lowered in the block 18 andafter its desired setting is secured the screw 40 can be turned causingthe stem 39 to be moved if necessary and fastened in the desiredposition. The bottom of the stem 39 is slotted and in the slot is setthe knife 16, in which "slot it is clamped by the screw 41. The stem 39is slotted vertically at 42. A screw 43 is provided in the block 18which has a reduced end which engages with the slot 42 and'perinits thestem to slide up 15 and 16 as above b .ment.v As the cutting cuttingblock support 30.

and down but prevents it from turning as the screw 38 is turned.

. It will be seen that the end of the cutter 16 comes very close to thecutter 15 so that the slot and the eye of the buttonhole will e cut insubstantially one continuous cut, the fiber that is left uncutbeinglittle or nothing.

It will be also understood that the cutter 16 cuts a single-slit withoutremoving material from the cloth while the cutter 15 cuts a roundopening which causes the removal of some of the material from the cloth,which material is pushed upward through the opening inthe screw as itaccumulates. I V

The length of the buttonhole is determined/by adjusting the cuttingblock 29 forward oiabacif This adjustment is secured by the ere-W44,which screw makes 85 threaded engagement with the block 29 as ,indicatedat d5 in Fig. 7 and rotates freely in the flange atthe front of thesupport 30 in which it is held against endwise moveblock 29 is moved tothe right in Fig. 3 it will engage more and more with the cutter 16 andincrease the length of the cut.

The ends of the cutting block 29 are guided by the rollers 46 which areset on pins fastened in the upturned ends of the Each end of the cuttingblock will be in engagement with two or three of these rollers and bythis engagement the cutting block will be held to a parallel forward andback movement and it will be thereby held in line.

The cutters are spaced apart by a mechanism which we will now describe.

A- series of 'lazy tongs 55 is provided, which lazy tongs on one sideare fastened to the bearing blocks 13 and on the other side to blocks 56which are mounted to slide on the shaft 19. iVhere the lazy tongs crossthey are fastened to blocks 57 which are mounted to slide freely on thescrew shaft 58. A double set of these lazy tongs is provided engagingwith both the top and bottom of these blocks. At the left hand end of'Figs. 1 and 2 the block 57 is threaded and makes engagement with thescrew 58.

On the right hand end of the shaft 58 is provided a pinion 59 with whichmeshes a gear 60 which is turned by a crank 61 and a handle 62. By thismechanism the shaft 58 can be rotated and the block at the left hand endof the shaft can be moved to the right or left. This in turn will bringthe center of all the lazy tongs nearer together or spread them fartherapart bringing the shafts 19 closer together or spacing them fartherapart; The end shaft is moved the greatest distance and each of theremaining shafts and their cutters are moved to an extent proportionalto its distance from the end of the series. It will be understood thatall the blocks 57 except the end block slide freely on the shaft, theblock at the left hand end alone being-threaded to the shaft. The shaft19 at the right in Fig. 1 and its cutter is held stationary.

As the lazy tongs 55 swing the blocks 57 will be moved forward or backand must, therefore, carry the shaft 58 forward or back with them and topermit this the shaft 15 mounted to move laterally. To permit thelateral movement of the shaft 58 the end plate 2 has a slot 63 thereinwhich receives the left hand end of the shaft, in which slot the end ofthe shaft may slide and turn freely. The plate 1 at the right hand endof the machine is provided. with a slot 64, in which slot is mounted ablock 65, which block carries the end of the shaft 58 and the shaft 66on which is mounted the gear 60 and the crank 61.

For the purpose of positioning the but tonholes at the proper distancefrom the edge of the cloth we provide a gage 67 which is adjustableforward and back toward the cutters. The. gage is U shaped and theupturned ends 68 and" 69 ofit are slotted as shown in Figs. 4 and 5. Onthese ends are provided the racks 70 and 71. A shaft 72 is providedhaving pinions keyed thereon which engage with each of the racks 70 and7l so that by turning the shaft the .1 pinions are rotated and the racksare moved forward," and backward and the gage is moved with the racks.The shaft 72 is mounted to rotate in the bearings in the plates 1 and 2as appears in Fig. 3.

As the gage is moved in and out it can swing on the shaft and theforward edge of the gage is held in engagement with the cutting block bymeans of the spring 73 which is fastened at one end to the gage and atthe other end to the bud 2 of the machine. I I

On the end plates 2 and 3 is fastened a U shaped guard plate 7 5 whichguard plate is cut away at the top in front, the edges being bentbackward as shown at 76 and 77. On the ends of the guard plate at thetop are formed flanges 78 and 79 in which is supported a glass coverplate 80 which protects the cutters.

\Ve claim.

1. In a machine for cutting button-holes, the combination of a frame, aseries of cutters mounted to slide thereon, a series of lazy tongsconnecting said cutters, a screw shaft, the end. pair of lazy tongsmaking threaded engagement with said shaft, the ot.erpairs of lazy tongsmaking sliding engagement with said shaft whereby the end cutter ismoved positively on the rotation of the shaft, and each of the remainingcuttem is moved to an extent proportional to its distance from the endof the series, said lazy tongs being held against lateral movement onone side and being free to move laterallyon the other side and atintermediate points with the screw shaft.

2. In amachine for cutting buttonholes the combination ofa frame,cutters mounted to slide thereon parallel to the work, means, forrotating said cutters around a horizontal axis to throw them into andout of operation. 75 V 3. In a machine for cutting buttonholes thecombination of a frame having a guide thereon, a bearing block mountedto travel in said guide parallel to the work, a support ing blockmounted to rotate on said bearing block, cutters carried by saidsupporting block, 'means for rotating said supporting block in thebearing block and locking it in operative or inoperative positions. l

4:. In a machine for cutting button-holes, the combination of a support,a series of cutters mounted to slide along said support, a seriesof lazytongs connected to said cutters, said lazy tongs being fastened againstmovement at one end, means forpositively moving them at the other end,said cutters thereafter normally remaining stationary, and means formoving the work against said cutters, said means including a threadedshaft having a threaded nut thereon engaging and moved bysaid shaft,said nutbeing attached to the lazy tongs at the free end of the series,sleeves attached to the intermediate lazy tongs and engaging with saidshaft to slide freely thereon, said lazy tongs being held againstlateral movement on one side and being free to move laterallypn theother side and at intermediate points with the screw shaft.

5. In a machine for cutting buttonholes the combination of asupporting'block, a round cutter and a straight'cutter mounted in saidsupporting block, said cutters working together to cut two parts of asingle opening, screws for positively adjusting said cutters up anddown. I

6. In a machine for cutting buttonholes the combination of a series ofcutters. a cut ting block adapted to move toward and away from saidcutters, means for supporting said cutting block, said means beingadapted to move said block with a parallel motion through the arc of acircle by which a shearing cut will be given, said block remaining inall positions parallel to its original position. i

'7. In a machine for cutting buttonholes thecombin'ai'ion of a cuttingblock mounted to swing toward and away from the cutters,

a gage mounted to swing on saidmachine with or indepcmlcntly of thecutting block, said gage bearing against the cutting block and'noriuallyswinging therewith.

8. In a machine for cutting button-holes,

the combination of a support a series of cut 1.0 to move laterallyonjthe other side and at 'havmg mountings connected to tongs onthe'opposite sides thereof by which said cutters are sides of the ing-fastenedagainst movement &

along said support, a s aftcolmected to each cutter by which, itsmovement iscontrolled, a series of lazyte' rs mounted to. move beingconnected at two points on opposite lazy-tongs, said lazy-tongs beheld'in correct parallel alinement, said lazy tongs being held against ateralmovement on one side and being free to move laterally on the other sideand at intermediate the cutters.

10; In a machine for cutting button-holes, the combination of a seriesof lazy-tongs, a series of cutters spread thereby, said cutters avingmountings connected to said lazytongs on the opposite sides thereof bywhich said cutters are held in are held in alinement at said points,said being held against lateral move- (1 being. free to move laterallyon the other side and at intermediate points toward and away from thecutters. n testimony whereof we affix our signatures in the presence ofa witness.

SAMUEL S. AMDURSKY. SAMUEL RUBEN FELD. itness:

ELEANOR M. CORCORAN.

points toward and awayfrom

